TacSolutions I have the opposite experience. Mine ran great from day one with the non notched hammer and blackdog magazines, I had a few jams with CCI mini mags. I got a tip from AR15.com about the overall length of the minimags that seem to a smidgen on the long side. I didnt check them just stop useing them and all is good. mine had the thread protector on it when I got it. I sent it back to tacsol to have it pinned. no problems no issues. I was tossed about what to get also.
Part of my dicission was based on magazine availabilty : to the best of my research S&W,Colt,GSG all took their own designed mags. So you may want to stock up on extra mags if you go with one of these.
Then I did not want to wait to see when a MA model S&W AR22 would come out. Surprised they had them quickly, they must be learning. I waited so long for the M&P40 to come out I lost interest.
I then went with the idea of buying a unit that takes easy to get magazines. Capacity was not a issue 10rounds is fine for me as the longer mags just seem to get in the way.
So it was units that take the ciener type mags or a 10/22 based unit.
So it came down to Colt- which I quickly remembered why I do not buy colt.....they dont submit handguns in mass for testing, if they have begun then I m unaware of that.
Then came TacSol or Spikes, I got to check out both side by side. I did not see any real difference between the 2. Quality looked to be about the same and design was very close. I was disapointed that niether will eject a unfired round. They both take the ceiner style mags.
Then it just came down to price and wait time.
I ended up buying a TacSol online from a vendor on sale with free shipping below the price I got from Tacsol on a group buy price. Which I tried getting going and failed for this reason. I was told they would not undersell dealers. Thats OK. so 499.00 1 mag and free shipping I bought it.
Spikes was a bit more no mag and 25.00 shipping plus a 6-8 week wait. no- Spike does offer a lot of different opptions though. Which is good and bad. After I went through the opptions it would have been about 800.00 for my upper.
I just couldnt get into the ruger its just not right. kinda sorta ARish and AKish with the mag release. Turned off by smith for the plastic gun reason.
If you dont have a AR lower the AR uppers are of no consideration, I have not seen any of the AK 22lr type rifle.
There are a few highend match grade AR upper builders out there, name exscapes me at the moment. AR15.com has a great 22lr sticky going.
They all seem to have there quirks and ills which amazes me..........
Have you considered a Remington 552speed master. It takes 22 short,long and LR ans eats them all with ease. I dont know why these manufactures cant build a 22lr that will cycle with no issues. You do not see many of these any where. I have one from 1968 and it runs flawless.